WO2019214454A1

WO2019214454A1 - Method and apparatus for constructing backhaul path

Info

Publication number: WO2019214454A1
Application number: PCT/CN2019/084383
Authority: WO
Inventors: 孙建成; 张大钧; 陈喆
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-05-08
Filing date: 2019-04-25
Publication date: 2019-11-14
Also published as: CN110461019A

Abstract

Provided by the present application is a method and apparatus for constructing a backhaul path, which is used to reduce the complexity and overhead of a wireless backhaul network topology, and improve service transmission efficiency. The method comprises: any relay node in a wireless backhaul network receiving a priority parameter broadcast by each node in at least one other node nearby, wherein the smaller the priority parameter of the node, the higher the priority corresponding to the node; reading the priority parameter, from the OAM configuration, of any relay node; screening, from the at least one other node, other nodes of which the cell signal strength meets a preset condition and of which the priority parameters are less than or equal to the priority parameter of the any relay node; and determining, from the screened other nodes, a next hop node, of the any relay node, in the direction toward an anchor base station node.

Description

Method and device for constructing backhaul path

The present application claims priority to Chinese Patent Application No. 201810431921.1, entitled "Construction Method and Apparatus for a Return Path", which is filed on May 8, 2018, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of mobile communications, and in particular, to a method and an apparatus for constructing a backhaul path.

Background technique

In order to better meet user needs and improve network capacity and throughput, an integrated access and backhaul node (IAB Node) is introduced in the wireless backhaul network. However, the prior art does not constrain the topology of the wireless backhaul network. Therefore, when deploying a wireless backhaul network, the operator may deploy a simple linear topology, a star topology, a tree topology, etc., or may be deployed more complicated. Mesh (wireless) topology, as shown in Figure 1, any one of the IAB nodes in the network topology may have multiple paths to the anchor base station node. Such a wireless backhaul network has a high complexity and a large overhead. When the user equipment (UE) service is transmitted, the backhaul path may be far away, resulting in low efficiency of service transmission.

Summary of the invention

The embodiment of the present invention provides a method and an apparatus for constructing a backhaul path, which are used to reduce complexity and overhead of a wireless backhaul network topology, and improve service transmission efficiency.

In a first aspect, the embodiment of the present application provides a method for constructing a backhaul path, which is applied to any relay node in a wireless backhaul network, including:

Receiving a priority parameter of each of the at least one other node in the periphery of any one of the relay nodes; wherein, the smaller the priority parameter of the node, the higher the priority corresponding to the node;

Reading the priority parameters of any of the relay nodes from an Operation Administration and Maintenance (OAM) configuration;

Extracting, from the at least one other node, other nodes whose cell signal strength meets a preset condition and whose priority parameter is less than or equal to a priority parameter of any one of the relay nodes;

Determining, from the other nodes that are filtered out, the next hop node of the any of the relay nodes in the direction to the anchor base station node.

In the above solution, when any of the relay nodes determines the next hop node to the anchor base station node, the cell signal strength is selected from the other neighboring nodes to meet the preset condition and the priority parameter is less than or equal to any of the foregoing The other nodes of the relay node's priority parameter then determine from the other nodes that are filtered out that the one of the relay nodes is in the direction of the next hop node to the anchor base station node. When the path of the radio relay node is selected, the cell signal strength of the reference node satisfies the preset condition, and the priority parameter of the node is also referred to, which can effectively avoid the situation of the path being far away, ensuring low complexity and overhead, and improving The system efficiency can better meet the transmission requirements of high-rate and low-latency 5G services and ensure user experience.

Optionally, determining, according to the other nodes that are filtered out, the next hop node in the direction of the node to the anchor base station, including: filtering the other nodes according to the priority parameter from small to Sorting in a large order to determine the node ranked first; connecting the node ranked first, as the relay node in the direction to the anchor base station node One hop node.

In this embodiment, any relay node to the anchor base station has only one effective path, which effectively avoids the path being far away, ensures that the network topology has low complexity and overhead, and improves system transmission efficiency.

Optionally, after the node that is ranked first is used as the next hop node of the any one of the relay nodes in the direction of the node of the anchor base station, the method further includes: detecting the When a link between a relay node and the first-ranked node is congested or fails, the next hop node in the direction of the node to the anchor base station is replaced with The node ranked second.

With this embodiment, when the link is congested or fails, the node can quickly determine a new next hop node, improve system reliability, and ensure user experience.

Optionally, determining, according to the other nodes that are filtered out, the next hop node in the direction of the node to the anchor base station, including: filtering the other nodes according to the priority parameter from small to Sorting in a large order, determining N nodes ranked in the first N bits, N is a positive integer greater than 1; connecting the N nodes, and using the node ranked first as the any relay node At the next hop node in the direction to the anchor base station node, the remaining N-1 nodes are taken as alternate next hop nodes.

In this embodiment, any relay node to the anchor base station has only one valid path and has a standby next hop node. While ensuring that the network topology has low complexity and overhead, and improving system transmission efficiency, Improve system reliability and ensure user experience.

Optionally, determining, according to the other nodes that are filtered out, the next hop node in the direction of the node to the anchor base station, including: filtering the other nodes according to the priority parameter from small to Sorting in a large order, determining M nodes ranked in the top M bits, M is a positive integer greater than 1; connecting the M nodes, and all the M nodes are used as any of the relay nodes a next hop node in the direction of the anchor base station node; wherein any one of the relay nodes transmits signaling or data from different UEs to the M nodes when transmitting signaling or data Different nodes, or send different signaling or data from the same UE to different ones of the M nodes, or repeatedly transmit the same signaling or data from the same UE to different ones of the M nodes .

In this embodiment, any of the relay nodes and the anchor base station may have multiple valid paths at the same time, for example, by differentiating different UEs to different paths, different services of different UEs, different paths, and multiple paths. Repeated transmission of the same service of the same UE can improve system transmission efficiency, better meet the transmission requirements of high-speed and low-latency 5G services, and ensure user experience.

Optionally, the other nodes that are selected are sorted according to the priority parameter from small to large, including: if there are multiple other nodes with the same priority parameter, the multiple other nodes are larger according to the cell signal strength. Sort to a small order.

In this embodiment, when the priority parameters are the same, the node with better cell signal can be selected as the next hop node, thereby further improving the system transmission efficiency and better meeting the transmission requirement of the 5G service with high rate and low delay. Guarantee the user experience.

Optionally, before the priority parameter of the any one of the relay nodes is read from the OAM configuration, the method further includes: accessing the wireless backhaul network by using the identity of the user terminal UE, registering, and downloading the OAM configuration; After the priority parameter of any one of the relay nodes is read from the OAM configuration, the method further includes: broadcasting a priority parameter of the any of the relay nodes in the cell system information of the any of the relay nodes.

With the present embodiment, the node can learn its own priority parameter based on the OAM configuration and inform other nodes of its own priority parameter, so that each node can select the next hop node with reference to the priority parameter, avoiding the path being far away, and ensuring the network topology. It has lower complexity and overhead and improves system transmission efficiency.

Optionally, the priority parameter of the node characterizes a distance of the node to an anchor base station node or a minimum number of jumps of the node to an anchor base station node.

In this implementation manner, the node can select a node that is closer to the anchor base station or has fewer jumps as the next hop node, thereby effectively avoiding the path being far away, ensuring lower complexity and overhead, and improving system efficiency. It can better meet the transmission requirements of high-rate and low-latency of 5G services and ensure user experience.

In a second aspect, the embodiment of the present application provides a method for constructing a backhaul path, which is applied to a UE, including: detecting a cell signal level value of each node in at least one node around the UE, and receiving each node. a priority parameter of the broadcast; wherein, the smaller the priority parameter of the node is, the higher the priority corresponding to the node is; the node whose cell signal level value meets the preset threshold is selected from the at least one node; Among the selected nodes, the node with the smallest priority parameter is selected as the access point of the UE to access the wireless backhaul network.

With the present embodiment, when selecting an access point of the wireless backhaul network, the UE refers to the priority parameter of the node in addition to the cell signal level value, that is, the selected cell signal level value satisfies the preset threshold and the priority parameter. The smallest node serves as an access point for the UE to access the wireless backhaul network, which can effectively improve the service transmission efficiency, better meet the transmission requirement of the 5G service with high rate and low delay, and ensure the user experience.

With the present embodiment, the UE can select a node that is closer to the anchor base station or has fewer hops as the access point, effectively avoiding the situation that the path is far away, and can effectively improve the service transmission efficiency and better meet the high rate of the 5G service. Low latency transmission requirements ensure user experience.

In a third aspect, the embodiment of the present application provides a device for constructing a backhaul path, including: a receiving unit, configured to receive a priority parameter of each of the at least one other node in the periphery of the device; wherein, the node The smaller the priority parameter, the higher the priority corresponding to the node; the processing unit is configured to read the priority parameter of the device from the OAM configuration; and select the cell signal strength from the at least one other node to meet the pre-preparation The other node that sets the condition and the priority parameter is less than or equal to the priority parameter of the device; determines, from the other nodes that are filtered out, the next hop node in the direction to the anchor base station node.

Optionally, the processing unit is configured to: sort the other nodes that are selected according to the priority parameter from small to large, determine the node ranked first; and connect the node that is ranked first; It is used as the next hop node of the device in the direction to the anchor base station node.

Optionally, the processing unit is further configured to: after detecting the first-ranked node as the next hop node in the direction of the device to the anchor base station node, When the link between the device and the first-ranked node is congested or fails, the device is replaced with the next-hop node in the direction to the anchor base station node. .

Optionally, the processing unit is configured to: sort the other nodes that are selected according to the priority parameters from small to large, and determine N nodes ranked in the first N bits, where N is a positive integer greater than 1; The N nodes, and the node ranked first as the next hop node of the device in the direction to the anchor base station node, and the remaining N-1 nodes as the standby next hop node .

Optionally, the processing unit is configured to: sort the other nodes that are selected according to the priority parameters from small to large, determine M nodes ranked in the first M bits, and M is a positive integer greater than 1; Said M nodes, and all of said M nodes are used as next hop nodes of said device in the direction of said anchor base station node; wherein said device will receive from signaling or data Signaling or data of different UEs are sent to different ones of the M nodes, or different signaling or data from the same UE is sent to different ones of the M nodes, or the same letter from the same UE The data or data is repeatedly sent to different ones of the M nodes.

Optionally, the processing unit is configured to: if there are multiple other nodes with the same priority parameter, sort the multiple other nodes according to the cell signal strength from large to small.

Optionally, the device further includes: an access unit, configured to access the device as the UE in the wireless backhaul before the processing unit reads the priority parameter of the device from the OAM configuration Networking, registering, and downloading an OAM configuration; a sending unit, configured to broadcast the device priority in the cell system information of the device after the processing unit reads the priority parameter of the device from the OAM configuration Level parameter.

In a fourth aspect, the embodiment of the present application provides a device for constructing a backhaul path, including: a detecting unit, configured to detect a cell signal level value of each node in at least one node of the periphery thereof; and a receiving unit, configured to receive the a priority parameter of the node broadcasted by each node; wherein the smaller the priority parameter of the node, the higher the priority of the node; the processing unit is configured to filter the cell signal level value from the at least one node A node that meets a preset threshold; selects a node with the smallest priority parameter from the filtered nodes as an access point of the device to access the wireless backhaul network.

In a fifth aspect, an embodiment of the present application provides a device for constructing a backhaul path, including: at least one processor, and a memory and a communication interface communicably connected to the at least one processor; wherein the memory stores The at least one processor executes the instructions of the first or second aspect of the embodiments of the present application by executing the instructions stored in the memory.

In a sixth aspect, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores computer instructions, when the computer instructions are run on a computer, causing the computer to perform the first aspect of the embodiments of the present application. Or the method of the second aspect.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

When any of the relay nodes determines the next hop node to the anchor base station node, the cell signal strength that is selected from the other neighboring nodes meets the preset condition and the priority parameter is less than or equal to any of the relay nodes. The other nodes of the priority parameter then determine from the other nodes that are filtered out that the one of the relay nodes is in the direction of the next hop node in the direction to the anchor base station node. When the path of the radio relay node is selected, the cell signal strength of the reference node satisfies the preset condition, and the priority parameter of the node is also referred to, thereby effectively avoiding the path being far away, ensuring low complexity and overhead, and improving the path. System efficiency can better meet the transmission requirements of high-rate and low-latency 5G services to ensure user experience.

DRAWINGS

1 is a schematic diagram of a topology structure of a wireless backhaul network in the prior art;

2 is a schematic flowchart of a method for constructing a backhaul path applied to any relay node in a wireless backhaul network according to an embodiment of the present application;

3 is a schematic diagram of a topology structure of a wireless backhaul network according to an embodiment of the present application;

4 is a schematic flowchart of a method for constructing a backhaul path applied to a UE according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a UE selecting a camping cell according to an embodiment of the present application;

6 is a schematic structural diagram of a device for constructing a backhaul path as any relay node in a wireless backhaul network according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a device for constructing a backhaul path as a UE according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a device for constructing a backhaul path according to an embodiment of the present application.

detailed description

The technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features of the embodiments and the embodiments of the present application are the detailed description of the technical solutions of the present application, and are not limited to the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments may be combined with each other.

It should be understood that in the description of the embodiments of the present application, the terms "first", "second" and the like are used only to distinguish the purpose of description, and are not to be understood as indicating or implying relative importance, nor can it be understood as an indication. Or suggest the order. In the description of the embodiments of the present application, "a plurality" means two or more.

The term “and/or” in the embodiment of the present application is merely an association relationship describing an association object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The embodiments of the present application can be applied to a 5G system; and can also be applied to other wireless communication systems, such as a Long Term Evolution (LTE) system, a Global System for Mobile Communication (GSM), and a mobile communication system ( Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network equipment systems.

The user terminal UE involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem. The wireless user terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant, PDA) and other equipment. The wireless user terminal may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Device.

The base station involved in the embodiment of the present application may be used to convert a received air frame into an IP (Internet Protocol) packet, as a router between the wireless terminal device and the rest of the access network, where the access network The rest of the network may include Internet Protocol (IP) network equipment. The base station can also coordinate attribute management of the air interface. For example, the base station may be a network device in a 5G system, such as a Next Generation Node B (gNB), or may be a Global System for Mobile Communication (GSM) or Code Division Multiple Access (Code Division Multiple). Base Transceiver Station (BTS) in Access, CDMA), may also be a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), or an evolved base station in LTE (evolutional) Node B, eNB or e-NodeB), the embodiment of the present application is not limited.

Referring to FIG. 2, an embodiment of the present application provides a method for constructing a backhaul path, which is applied to any relay node in a wireless backhaul network, including:

Step 101: Receive a priority parameter of each of the at least one other node in the periphery of any one of the relay nodes; wherein, the smaller the priority parameter of the node, the higher the priority corresponding to the node;

Based on the network planning, the network optimization, or the deployment of the actual wireless backhaul network, each of the relay nodes in the wireless backhaul network topology may be assigned a priority parameter by using the operation management and maintenance OAM configuration, and the priority parameter may be to characterize the relay node to The parameter of the distance of the anchor base station node may also be a parameter that indicates the minimum number of hops from the relay node to the anchor base station node, and may also be a fixed value that is manually set, which is not specifically limited in this embodiment.

Referring to FIG. 3, the distance parameter of the relay node to the anchor base station node is represented by a priority parameter as an example: the numbers in parentheses following each node name in FIG. 3 are priority parameters of the corresponding node. The priority parameters of the wireless relay nodes RN1, RN2, and RN3 that are closer to the anchor base station node Donor gNB are 1, and the priority parameters of the wireless relay nodes RN11 and RN12 that are farther from the anchor base station node are 2. And so on. Among them, Donor gNB may have no priority parameter, or Donor gNB's priority parameter is equal to 0.

Step 102: Read a priority parameter of any one of the relay nodes from the OAM configuration.

In a specific implementation process, after being powered on, any relay node first accesses the network as the UE, registers, and downloads the OAM configuration; the relay node can read its own priority parameter from the OAM configuration. And broadcasting the priority parameter of the relay node in the cell system information.

Step 103: Filter out, from the at least one other node, other nodes whose cell signal strength meets a preset condition and whose priority parameter is less than or equal to the priority parameter of any one of the relay nodes;

Step 104: Determine, from the other nodes that are filtered out, the next hop node in the direction of the node to the anchor base station.

In a specific implementation process, the implementation manner of determining the next hop node from the selected other nodes includes but is not limited to the following three types:

Type 1: Determine a node as the next hop node.

The specific implementation includes: sorting the other nodes in the order of priority parameters from small to large, and determining the nodes ranked first; and then connecting the nodes ranked first, as the Any relay node is the next hop node in the direction to the anchor base station node. According to such a strategy, eventually any node to the anchor base station has only one valid path.

In a specific implementation process, when sorting other selected nodes, if there are multiple other nodes having the same priority parameter, the plurality of other nodes are sorted according to the cell signal strength from large to small.

In a specific implementation process, if any of the nodes ranked first is used as the next hop node in the direction to the anchor base station node, If the link between the relay node and the first-ranked node is congested or fails, the any one of the relay nodes may be replaced with another next-hop node in the direction of the anchor base station node. A node, such as a node ranked second.

For example, referring to FIG. 3, if the signal strength of the Donor gNB satisfies the service requirement, the RN 11 may choose to establish a connection directly with the Donor gNB; if the signal of the Donor gNB is not good enough, the RN 11 may preferably connect the RN3 with the priority parameter of 1. Similarly, RN12 prefers RN4 as the next hop node, RN4 selects RN1 as the next hop node, and RN1 selects Donor gNB as the next hop node, so that the path RN12-RN4-RN1-Donor will reside on RN12. The next UE provides services.

Type 2: Determine multiple nodes and use one node as the next hop node.

The specific implementation manner includes: sorting other selected nodes according to priority parameters from small to large, determining N nodes ranked in the first N bits, N is a positive integer greater than 1, and connecting the N nodes, And the node ranked first is used as the next hop node of the any relay node in the direction to the anchor base station node, and the remaining N-1 nodes are used as the standby next hop node, so that The next hop node can be quickly switched to the standby next hop node if the link between the any of the relay nodes and the first-ranked node is congested or failed.

The determining of the value of the N may be determined according to factors such as the number of the relay nodes included in the topology of the actual backhaul network, and the RRM (Radio Resource Management) measurement result of each relay node, as long as it can be determined. The N nodes ranked in the first N positions can avoid the situation that the path is far away, and the system efficiency can be improved, which is not limited herein.

Similar to mode 1, when sorting other selected nodes, if there are multiple other nodes having the same priority parameter, the plurality of other nodes are sorted according to the cell signal strength from large to small.

For example, referring to FIG. 3, the RN 12 can simultaneously connect RN1, RN4, and RN13, and RN5 can simultaneously connect RN1, RN4, and RN6, and RN4 can connect to RN1 and RN12 at the same time, and so on. However, RN12 may only select RN4 with the lowest priority parameter among RN5, RN4, and RN13 for its service, RN4 may only select RN1 for its service, and RN1 only selects Donor gNB for its service. The path and mode 1 of the finally determined RN12-RN4-RN1-Donor gNB are consistent. However, if congestion or failure occurs between a certain link in the RN12-RN4-RN1-Donor gNB, you can quickly switch to the alternate path. For example, if the RN4 detects its own link to the RN1, the next hop can be used. The node is switched by RN1 to RN12.

Type 3: Determine multiple nodes, all as next hop nodes.

The specific implementation manner includes: sorting other selected nodes according to priority parameters from small to large, determining M nodes ranked in the first M bits, and M is a positive integer greater than 1; connecting the M nodes, And all the M nodes are used as the next hop node of the any relay node in the direction to the anchor base station node, and provide services for the UE.

The specific implementation manner in which the M nodes simultaneously provide services for the UE includes:

1) Differentiating different UEs to different paths, and transmitting any signaling or data from different UEs to different nodes of the M nodes when transmitting signaling or data.

For example, referring to FIG. 3, when detecting that the RN5-RN1 link load is high, the RN5 may put the services of some newly accessed UEs on the link of the RN5-RN6, or part of the UEs on the RN5-RN1. The service is transferred to the RN5-RN6 link for transmission.

2) Send different signaling or data from the same UE to different ones of the M nodes.

For example, referring to FIG. 3, based on link delay and load considerations, different services of UE2 can be transmitted to two different nodes of RN11 and RN12.

3) Repeat the same signaling or data from the same UE to different ones of the M nodes. Especially in the case of weak signal quality, it is considered that repeated transmission of the same service of the same UE on multiple links can ensure the transmission success rate.

In the above solution, when any of the relay nodes determines the next hop node to the anchor base station node, the cell signal strength is selected from the other neighboring nodes to meet the preset condition and the priority parameter is less than or equal to any of the foregoing The other nodes of the relay node's priority parameter then determine from the other nodes that are filtered out that the one of the relay nodes is in the direction of the next hop node to the anchor base station node. When the path selection is made by the wireless relay node, in addition to the preset signal of the cell strength of the reference node, the priority parameter of the node is also referred to, so that the node can select to be closer to the anchor base station or have fewer jumps. The node acts as the next hop node, effectively avoiding the situation of the path being far away, ensuring lower complexity and overhead, improving system efficiency, and better meeting the transmission requirements of high-rate and low-latency 5G services to ensure user experience.

In addition, the above solution also provides multiple path selection methods, such as determining one node with the highest priority as the next hop node, determining that multiple nodes are the next hop nodes, etc., and can flexibly support various network topologies. Path selection, so this solution also has the advantages of high flexibility and strong applicability.

Based on the same inventive concept, the embodiment of the present application further provides a method for constructing a backhaul path, which is applied to a UE to implement an access point for a UE to select a wireless backhaul network. Referring to Figure 4, the method includes:

Step 201: Detect a cell signal level value of each node in at least one node of the UE, and receive a priority parameter of the node broadcast by each node.

Wherein, the smaller the priority parameter of the node, the higher the priority corresponding to the node; the priority parameter of the node represents the distance of the node to the anchor base station node or the minimum hop of the node to the anchor base station node Number of transfers.

Step 202: Filter out, from the at least one node, a node whose cell signal level value meets a preset threshold;

Step 203: Select a node with the smallest priority parameter from the selected nodes as an access point of the UE to access the wireless backhaul network.

For example, referring to FIG. 5, UE1 is in the common coverage area of Donor gNB and IAB1, and the cell signal level values of Donor gNB and IAB1 measured by UE1 satisfy the preset threshold, so even if the signal of IAB1 is stronger than Donor gNB, the UE can The cell camp of Donor gNB is preferentially selected; UE2 is at the coverage edge of DonorgNB, and the measured signal level of Donor gNB cell is far lower than the preset threshold, but the distance from IAB1 is relatively close, so the measured cell of IAB1 The signal level value may be much higher than the cell signal level value of the Donor gNB, so the cell camping of IAB1 is selected; UE3 is in the middle of IAB1 and IAB2, and the measured cell signal level values of IAB1 and IAB2 are both satisfied. If the threshold is set, then UE3 can preferentially select the cell camp of IAB1 that is closer to Donor gNB; the level of the IAB1 cell signal measured by UE4 is far lower than the preset threshold, but the distance from IAB2 is relatively close, so IAB2 is selected. The cell camps; and UE5 is only within the coverage of IAB2, so only the cell camp of IAB2 can be selected.

In the above solution, when selecting an access point of the wireless backhaul network, the UE refers to the priority parameter of the node in addition to the cell signal level value, that is, the selected cell signal level value satisfies the preset threshold and the priority parameter. The smallest node is used as an access point for the UE to access the wireless backhaul network, and the UE can select a node that is closer to the anchor base station or has fewer jumps as the access point, thereby effectively avoiding the situation that the path is far away, and can effectively improve Service transmission efficiency, better meet the transmission requirements of high-speed and low-latency 5G services to ensure user experience.

It should be noted that the foregoing two embodiments (steps 101 to 104, and steps 201 to 203) may be implemented separately in a specific application scenario, or may be implemented in combination, and the embodiments of the present application are not specifically limited.

Based on the same inventive concept, the embodiment of the present application further provides a device for constructing a backhaul path, which may be any relay node in a wireless backhaul network. Referring to FIG. 6, the constructing device may include:

The receiving unit 301 is configured to receive a priority parameter of each of the at least one other node in the vicinity of the device, where the priority parameter of the node is higher, and the priority corresponding to the node is higher;

The processing unit 302 is configured to read the priority parameter of the device from the OAM configuration, and select, from the at least one other node, that the cell signal strength meets a preset condition and the priority parameter is less than or equal to the priority of the device. Other nodes of the parameter; determine from the other nodes that are filtered out that the device is in the next hop node in the direction to the anchor base station node.

Optionally, the processing unit 302 is configured to:

Sorting the other nodes in the order of priority parameters from small to large to determine the node ranked first;

The node ranked first is connected as the next hop node of the device in the direction to the anchor base station node.

Optionally, the processing unit 302 is further configured to:

After the node ranked first is used as the next hop node of the device in the direction to the anchor base station node, detecting the device and the node ranked first When the inter-link is congested or fails, the device is replaced with the next-hop node in the direction to the anchor base station node.

Optionally, the processing unit 302 is configured to:

The other nodes that are selected are sorted according to the priority parameters from small to large, and N nodes ranked in the first N bits are determined, and N is a positive integer greater than 1.

Connecting the N nodes, and using the node ranked first as the next hop node of the device in the direction to the anchor base station node, and using the remaining N-1 nodes as the backup next hop node.

Optionally, the processing unit 302 is configured to:

Sort the other nodes according to the priority parameters from small to large, and determine the M nodes ranked in the first M bits, and M is a positive integer greater than 1.

Connecting the M nodes, and all of the M nodes are used as a next hop node of the device in a direction to the anchor base station node; wherein, when transmitting signaling or data, the device Signaling or data from different UEs are sent to different ones of the M nodes, or different signaling or data from the same UE is sent to different ones of the M nodes, or the same from the same UE Signaling or data is repeatedly sent to different ones of the M nodes.

Optionally, the processing unit 302 is configured to:

If there are multiple other nodes whose priority parameters are the same, the plurality of other nodes are sorted in order of the cell signal strength from large to small.

Optionally, as shown in FIG. 6, the apparatus further includes:

The access unit 303 is configured to: before the processing unit 302 reads the priority parameter of the device from the OAM configuration, access the device to the wireless backhaul network as a UE, register, and download the OAM. Configuration

The sending unit 304 is configured to: after the processing unit 302 reads the priority parameter of the device from the OAM configuration, broadcast the priority parameter of the device in the cell system information of the device.

For the specific implementation of the operations performed by the foregoing units, reference may be made to the specific implementation manner of the corresponding steps in the method for constructing the backhaul path in the embodiment of the present application.

Based on the same inventive concept, the embodiment of the present application further provides a device for constructing a backhaul path, which may be a user terminal. Referring to FIG. 7, the constructing device may include:

The detecting unit 401 is configured to detect a cell signal level value of each of at least one node in its vicinity;

The receiving unit 402 is configured to receive a priority parameter of the node that is broadcast by each of the nodes; wherein, the smaller the priority parameter of the node, the higher the priority corresponding to the node;

The processing unit 403 is configured to filter, from the at least one node, a node whose cell signal level value meets a preset threshold, and select, from the selected nodes, a node with the smallest priority parameter as the device accessing the wireless backhaul network. Access Point.

Based on the same inventive concept, the embodiment of the present application further provides a device for constructing a backhaul path. Referring to FIG. 8, the method includes:

At least one processor 501, and

a memory 502, a communication interface 503 communicatively coupled to the at least one processor 501;

The memory 502 stores instructions executable by the at least one processor 501, and the at least one processor 501 performs the above-described embodiments of the present application by using the communication interface 503 by executing an instruction stored in the memory 502. The method of constructing the backhaul path.

Specifically, the device for constructing a backhaul path provided by the embodiment of the present application may be any relay node in the wireless backhaul network. Referring to FIG. 8, the building device may include: a processor 501 and a memory 502;

The processor 501 is configured to read a program in the memory 502 and perform the following process:

Reading the priority parameter of any one of the relay nodes from the operation management and maintenance OAM configuration;

The next hop node of the any of the relay nodes in the direction to the anchor base station node is determined from the other nodes that are filtered out.

Optionally, the processor 501 is specifically configured to:

The node ranked first is connected as the next hop node of the any relay node in the direction to the anchor base station node.

Optionally, the processor 501 is further configured to:

After detecting the first-ranked node as the any one of the relay nodes in the direction to the anchor base station node, detecting any one of the relay nodes and the When the link between the first-ranked nodes is congested or fails, the any one of the relay nodes is replaced with the next-hop node in the direction to the anchor base station node. .

Optionally, the processor 501 is specifically configured to:

Connecting the N nodes, and using the node ranked first as the next hop node of the any relay node in the direction to the anchor base station node, and using the remaining N-1 nodes as backup Next hop node.

Optionally, the processor 501 is specifically configured to:

Connecting the M nodes, and all the M nodes are used as the next hop node of the any relay node in the direction of the anchor base station node; wherein any one of the relay nodes is Transmitting signaling or data, transmitting signaling or data from different user terminal UEs to different ones of the M nodes, or transmitting different signaling or data from the same UE to the M nodes Different nodes, or the same signaling or data from the same UE is repeatedly sent to different ones of the M nodes.

Optionally, the processor 501 is specifically configured to:

Optionally, the processor 501 is further configured to:

Before reading the priority parameter of any of the relay nodes from the OAM configuration, accessing the wireless backhaul network as the user terminal UE, registering, and downloading the OAM configuration;

After reading the priority parameters of the any of the relay nodes from the OAM configuration, the priority parameters of the any of the relay nodes are broadcast in the cell system information of the any of the relay nodes.

Specifically, the device for constructing a backhaul path provided by the embodiment of the present application may be a UE. Referring to FIG. 8 as well, the device may include: a processor 501 and a memory 502;

Detecting a cell signal level value of each of the at least one node in the periphery of the UE, and receiving a priority parameter of the node broadcasted by each node; wherein, the smaller the priority parameter of the node, the corresponding node The higher the priority;

Filtering, from the at least one node, a node whose cell signal level value meets a preset threshold;

A node with the smallest priority parameter is selected from the selected nodes as an access point of the UE to access the wireless backhaul network.

In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 501 and various circuits of memory represented by memory 502. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 can store data used by the processor 501 in performing operations.

The flow disclosed in the embodiment of the present application may be applied to the processor 501 or implemented by the processor 501. In the implementation process, each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in the form of software. The processor 501 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application. Various methods, steps, and logic blocks of the disclosure. A general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the signal processing flow in conjunction with its hardware.

Based on the same inventive concept, the embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium stores computer instructions, when the computer instructions are run on a computer, causing the computer to execute the foregoing embodiment of the present application. The method of constructing the backhaul path.

Alternatively, the readable storage medium may be a computer storage medium, and the computer storage medium may be any available media or data storage device accessible by the computer, including but not limited to magnetic memory (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk) (MO), etc., optical memory (for example, CD, DVD, BD, HVD, etc.), and semiconductor memory (for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for constructing a backhaul path, which is applied to any relay node in a wireless backhaul network, and the method includes:

Receiving, by each of the at least one other node around the relay node, a priority parameter of its own broadcast;

Reading the priority parameter of any one of the relay nodes from the operation management and maintenance OAM configuration;

Extracting, from the at least one other node, other nodes whose cell signal strength meets a preset condition and whose priority parameter is less than or equal to a priority parameter of any one of the relay nodes;

Determining, from the other nodes that are filtered out, the next hop node of the any of the relay nodes in the direction to the anchor base station node.
The method of claim 1, wherein determining, by the other nodes selected from the other nodes, the next hop node in the direction of the node to the anchor base station comprises:

Sorting the other nodes in the order of priority parameters from small to large to determine the node ranked first;

The node ranked first is connected as the next hop node of the any relay node in the direction to the anchor base station node.
The method of claim 2, wherein the node ranked first is used as the next hop node of the any of the relay nodes in the direction to the anchor base station node, Also includes:

And detecting, when the link between the any of the relay nodes and the first-ranked node is congested or failed, the any of the relay nodes in a direction to the anchor base station node The next hop node is replaced with the node ranked second.
The method of claim 1, wherein determining, by the other nodes selected from the other nodes, the next hop node in the direction of the node to the anchor base station comprises:

The other nodes that are selected are sorted according to the priority parameters from small to large, and N nodes ranked in the first N bits are determined, and N is a positive integer greater than 1.

Connecting the N nodes, and using the node ranked first as the next hop node of the any relay node in the direction to the anchor base station node, and using the remaining N-1 nodes as backup Next hop node.
The method of claim 1, wherein determining, by the other nodes selected from the other nodes, the next hop node in the direction of the node to the anchor base station comprises:

Sort the other nodes according to the priority parameters from small to large, and determine the M nodes ranked in the first M bits, and M is a positive integer greater than 1.

Connecting the M nodes, and all the M nodes are used as the next hop node of the any relay node in the direction of the anchor base station node; wherein any one of the relay nodes is Transmitting signaling or data, transmitting signaling or data from different user terminal UEs to different ones of the M nodes, or transmitting different signaling or data from the same UE to the M nodes Different nodes, or the same signaling or data from the same UE is repeatedly sent to different ones of the M nodes.
The method according to any one of claims 2 to 5, wherein the other nodes that are selected are sorted according to priority parameters from small to large, including:

If there are multiple other nodes whose priority parameters are the same, the plurality of other nodes are sorted in order of the cell signal strength from large to small.
The method according to any one of claims 1 to 5, further comprising: before reading the priority parameter of the relay node from the OAM configuration, the method further comprising:

Accessing the wireless backhaul network as the identity of the user terminal UE, registering, and downloading the OAM configuration;

After reading the priority parameter of any of the relay nodes from the OAM configuration, the method further includes:

Broadcasting the priority parameter of any of the relay nodes in the cell system information of any of the relay nodes.
The method according to any one of claims 1 to 5, wherein the priority parameter of the node characterizes a distance of the node to an anchor base station node or a minimum number of jumps of the node to an anchor base station node .
A method for constructing a backhaul path, which is characterized in that it is applied to a UE, including:

Detecting a cell signal level value of each of the at least one node in the periphery of the UE, and receiving a priority parameter of the node broadcasted by each node;

Filtering, from the at least one node, a node whose cell signal level value meets a preset threshold;

A node with the smallest priority parameter is selected from the selected nodes as an access point of the UE to access the wireless backhaul network.
The method of claim 9, wherein the priority parameter of the node characterizes a distance of the node to an anchor base station node or a minimum number of jumps of the node to an anchor base station node.
A device for constructing a backhaul path, comprising:

a receiving unit, configured to receive a priority parameter of its own broadcast by each of the at least one other node around the device;

a processing unit, configured to read a priority parameter of the device from an OAM configuration; and select, from the at least one other node, a cell signal strength that meets a preset condition and a priority parameter that is less than or equal to a priority parameter of the device Other nodes; determine from the other nodes that are filtered out that the device is in the next hop node in the direction to the anchor base station node.
The apparatus of claim 11 wherein said processing unit is operative to:

Sorting the other nodes in the order of priority parameters from small to large to determine the node ranked first;

The node ranked first is connected as the next hop node of the device in the direction to the anchor base station node.
The device according to claim 12, wherein the processing unit is further configured to:

After the node ranked first is used as the next hop node of the device in the direction to the anchor base station node, detecting the device and the node ranked first When the inter-link is congested or fails, the device is replaced with the next-hop node in the direction to the anchor base station node.
The apparatus of claim 11 wherein said processing unit is operative to:

The other nodes that are selected are sorted according to the priority parameters from small to large, and N nodes ranked in the first N bits are determined, and N is a positive integer greater than 1.

Connecting the N nodes, and using the node ranked first as the next hop node of the device in the direction to the anchor base station node, and using the remaining N-1 nodes as the backup next hop node.
The apparatus of claim 11 wherein said processing unit is operative to:

Sort the other nodes according to the priority parameters from small to large, and determine the M nodes ranked in the first M bits, and M is a positive integer greater than 1.

Connecting the M nodes, and all of the M nodes are used as a next hop node of the device in a direction to the anchor base station node; wherein, when transmitting signaling or data, the device Signaling or data from different UEs are sent to different ones of the M nodes, or different signaling or data from the same UE is sent to different ones of the M nodes, or the same from the same UE Signaling or data is repeatedly sent to different ones of the M nodes.
The device according to any one of claims 12 to 15, wherein the processing unit is configured to:

If there are multiple other nodes whose priority parameters are the same, the plurality of other nodes are sorted in order of the cell signal strength from large to small.
The device according to any one of claims 11 to 15, wherein the device further comprises:

An access unit, configured to: before the processing unit reads the priority parameter of the device from the OAM configuration, access the device to the wireless backhaul network as a UE, register, and download an OAM configuration;

And a sending unit, configured to: after the processing unit reads the priority parameter of the device from the OAM configuration, broadcast the priority parameter of the device in the cell system information of the device.
The apparatus according to any one of claims 11 to 15, wherein the priority parameter of the node characterizes a distance of the node to an anchor base station node or a minimum number of jumps of the node to an anchor base station node .
A device for constructing a backhaul path, comprising:

a detecting unit, configured to detect a cell signal level value of each of at least one node in its vicinity;

a receiving unit, configured to receive a priority parameter of the self broadcast by each node;

a processing unit, configured to filter, from the at least one node, a node whose cell signal level value meets a preset threshold; select a node with the smallest priority parameter from the selected nodes as a connection of the device to the wireless backhaul network Entry point.
The apparatus of claim 19, wherein the priority parameter of the node characterizes a distance of the node to an anchor base station node or a minimum number of jumps of the node to an anchor base station node.
A device for constructing a backhaul path, comprising:

At least one processor, and

a memory, communication interface communicatively coupled to the at least one processor;

Wherein the memory stores instructions executable by the at least one processor, the at least one processor executing the instructions stored in the memory, using the communication interface to perform any one of claims 1 to 10. The method described.
A computer readable storage medium, wherein the computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 10. method.